92168.pdf
92 Liquid-gas and liquid-liquid interfaces The alternative approach is to treat micellisation as a simple phase separation of su ...
Liquid-gas and liquid-liquid interfaces 93 In general, micellisation is an exothermic process and the c.m.c. increases with incr ...
94 Liquid-gas and liquid-liquid interfaces form two separate liquid-air interfaces (Figure 4.15a), and is given by the Dupre equ ...
Liquid-gas and liquid-liquid interfaces 95 AW Figure 4. 16 A drop of non-spreading oil on a water surface ^ Saturated solution o ...
96 Liquid-gas and liquid-liquid interfaces Substituting in the Dupre equation, the spreading coefficient can be related to the w ...
Liquid-gas and liquid-liquid interfaces 97 molecule in thickness with the hydrophilic -COOH or -OH groups orientated towards the ...
98 Liquid-gas and liquid-liquid interfaces for containing and manoeuvring insoluble monolayers between barriers for the direct d ...
Liquid-gas and liquid-liquid interfaces 99 Figure 4.19 Sunlight) A surface balance (By courtesy of Unilever Research Laboratory, ...
100 Liquid-gas and liquid-liquid interfaces further by doing away with the movable barrier as well and regulating the area of th ...
Liquid-gas and liquid-liquid interfaces 101 Surface r/ieo/ogy^58 '^157 Surface viscosity is the change in the viscosity of the s ...
102 Liquid-gas and liquid-liquid interfaces designed^158 for studying film creep under a constant shearing stress. A platinum ri ...
Liquid-gas and liquid-liquid interfaces 103 substrate) and temperature play an important part in determining the nature of the f ...
104 Liquid-gas and liquid-liquid interfaces 1 TT gives T = —= — A kT i.e. irA = kT (4.35) where A is the average area per molecu ...
Liquid-gas and liquid-liquid interfaces 105 Condensed films Palmitic, stearic and higher straight-chain fatty acids are examples ...
106 Liquid-gas and liquid-liquid interfaces 40 30 20 10 0 0.20 0.25 0.30 A/nm^ molecule"^ Figure 4.24 ir-A curves for stearic ac ...
Liquid-gas and liquid-liquid interfaces 107 affinity for the aqueous surface. Compression of the oleic acid film forces the doub ...
108 Liquid-gas and liquid-liquid interfaces Liquid-expanded films obey the equation of state, A 0 ) = kT (4.36) which resembles ...
Liquid-gas and liquid-liquid interfaces 109 groups, fatty acid monolayers form gaseous or liquid-expanded films at much lower te ...
110 Liquid-gas and liquid-liquid interfaces thousand-fold. Tarry material, dust, etc., in town fogs is responsible for delay in ...
Liquid-gas and liquid-liquid interfaces 111 Figure 4.27 Tt-A and r)s-A curves for a spread monolayer of /3-globulin at the petro ...
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